Locomotive rear frame



Sept. 6', 1927.

w. BRUCE LOCOMOTIVE REAR FRAME m 3 SheetsSheet 2 Filed Oct. 15. 1926 m -0 FT p 1927- A. w. BRUCE LOCOMOTIVE REAR FRAME Filed Oct. 15, 1926 3 Sheets-Sheet 5 Patented Sept. 6, 1927.

PATENT OFFICE.

, ALFRED w, nation, OF NEW YORK, N. Y.

LOCOMOTIVE REAR FRAME.

Application filed October 15, 1926. Serial No. 141,812.

The objectof my .invention is to provide a rear frame construction for locomotives, which will enable a greater slope to be given to the ash an side walls, and the cubic capacity oft e rash pan to be materially increased. A further object of the invention is to utilize the upwardly and outwardly inclined portions of the side sills of the rear frame, as part-s of the side walls of theash It hasheretofore been the practice to con struct the rear or supplemental frames of locomotives. with longitudinal side sills, disposed vertically. Such construction has imposed a serious limitation, both on the slopewhich may be givenv to the ash pan side walls, and the cubic capacity of the pan; The present invention provides for sloping the side sills outwardly and upwardly to permit of the utilization of an ash pan having increased cubic capacity, and greater inclination of its side walls, and further, contemplates utilizing the inclined portions of the side members, as part of the side walls of the ash pan. The invention further contemplates supporting the ash pan independently of the truck, with the hopper depending down between the two axles of the truck.

In the accompanying drawings: Figure 1 is a partial'side view, in elevation, of the rear end of a locomotive, embodying my 111: vention, a portion being broken away to show the ends of the ash pan hopper sup ported independently of the transverse mem: ber; Fig. 2, a top or plan view thereof, with the boiler removed; Fig. 3 a transverse sec tion, on the line a a of Fig. 1; Fig. 4, a similar section, on the line b b of Fig. 1; Fig. 5

a transverse section of one of the side sills, showing aheat insulating liner plate applied thereto; and, Fig. 6 a view, in perspective,- of one of the side sills.

In the practice of my invention, referring descriptively to the specific embodiment thereof which is herein exemplified as applied in a locomotive, the rear frame comprises two parallel longitudinally extending side members or sills, 10, bolted at their front ends to the main. frame members, 11. A

transverse bumper beam, 12, connects the rear ends of the side sills, and a transverse front beam, 13, connects their front ends. In the present instance, the rear frame is shown supported on a four wheeled truck, of usual construction, having a pair of rear wheels, 14, mounted on the axle, 15, and a pair of front wheels, 16, of smaller diameter than the rear wheels mounted on the axle, 17. Each of the side sills, 10, of the rear frame, is formed with a front portion, having a substantially vertical lower portion, 10 joining with an upwardly and outwardly inclined upper portion, 10 The rear ends, 10, of the sills, are formed in substantially inverted L shape, in cross section, to permit lateral movement of the rear wheels. The inclined portions, 10 and the vertical portions, 10?, depending therefrom, constitute a portion of the side walls of the ash pan, and may be protected from the heat of the ashes by a suitable heat insulating lining, 18, secured tothe upwardly inclined and the vertical portions, by bolts, 19, or otherwise, (see Fig. 5). Extending horizontally outward from the lower edge of the vertical portion, 19', is a flange, 10 to which the lowerpart of the ash pan hopper is secured,

by welding, bolting, or other suitable manner. Secured to the upper edge of the inclined portions 10 of the rear frame side sills, by welding, bolting, or other suitable means, are outwardly and upwardly inclined ash pan side members, 21, which terminate in the usual vertical ash pan collar, 21 which extends beyond the mud ring to pro- ,vide ample space for the free circulation of air to the grate. The end walls of the ash pan are supported by the side walls, and are not: constituted in part of the transverse members of the rear frame, and may be formed integrally with the liners, 18. In the described construction, the entire ash pan is supported on the rear frame, so that longitudinal expansion of the firebox is not restricted, butit is to be understood that the ash pan may be supported from the mud ring independently 'of the truck frame, as indicated in dottedlines, Fig. 4:.

Important advantages of inclining the portions. 10, of the rear frame side sills, are that the ash pan side walls can be given a sutlicicntly abrupt slope to insure the free sliding of the ashes to the bottom of the pan; and that the cubic capacity of the ash pan may be greatly increased.

I claim as my invention and desire to cure by Letters Patent:

l. A rear frame side sill for locomotives. baring a portion of its inner face inclined up *ardly and outwardly, to afford an increase in ash pan capacity.

2. A rear frame side sill for locomotives, having a portion of its inner face inclined upwardly and outwardly. to afford an increase in the angle of inclination of the ash pan side wall.

3. A rear frame side sill for locomotives, having a. portion of its inner face inclined upwardly and outwardly, to afford an in crease in ash pan capacity, and another portion of said face disposed substantially vcrtically below said first mentioned portion.

1-. A rear frame side sill for locomotives. having a portion of its inner face inclined upwardly and out *ardly. to afford an increase in the angle of inclinatioi'i of the ash pan side wall. and another portion of said face disposed substantially vertical below said first mentioned portion 5. In a rear frame for locomotives, the combination of side sills, having inner faces upwardly and outwardly inclined to afford an increase in ash pan capacity; and trans rersely extending means, connectinng said sills.

(3. In a rear frame for locomotives, the combination of side sills, having inner faces upwardly and outwardly inclined to afford an increase in the angle of inclination of the ash pan side walls; and transversely oxteuding means, connecting said sills.

7. In a rear frame for locomotives, the combination of side sills, having a portion of their inner faces upwardly and outwardly inclined, to atl'ord an increase in ash pan capacity, and another portion of said faces disposed substantially vertical below said first mentioned portion; and transversely extending means. connecting said sills.

8. In a rear frame for locomotives, the continuation of side sills. having a portion of their faces upwardly and outwardly inclined to afford an increase in the angle of inclination of the ash pan side walls. and another portion of said faces disposed sub stantially vertical below said first mentioned portion; and transversely extending means, connecting said sills.

9. In a rear frame for locomotives, the con'ibini'ition of an ash pan; side sills, having a portion of their inner faces upwardly and outwardly inclined, to afford an increase in ash pan capacity, said inclined portions constituting a portion of the side 'alls of the ash pan; and transversely extending means, connecting said sills.

10. In a rear frame for locomotives, the combination of an ash pan; side sills, having a portion of their inner faces upwardly and outwardly inclined. to afford an increase in ash pan mpacity, said inclined portions coi'istituting a portion of the side walls of the ash pan: heat insulating liners for said inclinei'l portions: and transversely extending means, connecting said sills.

ll. A rear frame side sill for locomotives, having a rear portion of substantially invertcd L shape. in cross section. and a portion forward thereof having an inner face inclined upwardly and outwardly, to afford an in crease in ash pan capacity.

12. In a locomotive, the combination of a main frame; a rear frame, embodying side sills having inner laces, upwardly andoutwardly inclined; a trailing truck, comprising a frame and a plurality of axles, and an ash pan supported independently of the truck, and depending between two of said axles.

13. In a locomotive, the combination of a main frame; a rear frainc, embodying side sills, having inner faces upwardly and out- \Yal'tlly inclined. to afford an increase in the angle of imtlination of the ash pan side walls; a trailing truck, connprising a frame, and a plurality-of axles; and an ash pan supported independently of the truck and rear frames, and depending between the side sills and two of said axles.

14-. A rear frame for locomotives, formed as an integral casting, comprising side sills, having inner faces upwardly and outwardly inclined, to afford an increase in the angle of inclination of the ash pan side walls, a transverse member connecting the front; ends of the side sills, and a transverse mombcr connecting the rear ends of the side sills.

15. A rear frame side sill for lOCOll'lOlllVGS, formed as an integral casting, having an i11- .ner wall, inclined upwardly and outwardly, to afford an increase in the angle of inclination of the ash pan side wall.

16. A rear frame for locomotives. formed as an integral casting, embodying an inner wall, comprisii'ig a vertical portion, and an upwardly and outwardly directed port-ion, extending tl'iercfrom: and an outwardly directed flange, extending along the bottom of said verti Yt'tl portion.

17. A rear frame for locomotives, formed as an integral casting, having a rear portion. of substantially inverted L shape, in cross section, and a front portion, embodying a wall, connorising a vertical portion, and an upwardly and outwardly directed portion extending therefrom, to afford an increase in the angle of inclination of the ash pan side wall; and an outwardly directed flange, extending along the bottom of said vertical portion.

18. In a locomotive, the combination of a rear frame, having side sills, each formed with an upwardly and outwardly directed portion transverse members, connecting said side sills; and an ash pan having end walls, not embodying the transverse members, and side walls, constituted, in part, of the upwardly and outwardly directed portions of the sills.

19. In a locomotive, the combination of an ash pan; and a rear frame having side sills upwardly and outwardly inclined, and affording support for the ash pan.

20. In a locomotive the combination of a rear frame, having side sills, each formed with an upwardly and outwardly directed portion; transverse members, connecting said side sills; and an ash pan, having a hopper depending between the sills, said hopper having end walls not embodying the transverse members.

ALFRED W. BRUCE. 

